Clinton lovell



(No Model.)

C. LOVELL.

- RIVBT PORMING D18.

No. 840,888. Patented Api. 27, 1888.

IINITED STATES PATENT OFFICE.

CLINTON LOVELL, BOSTON, MASSACHUSETTS, ASSIGNOR TO THE ALBERT NAIL COMPANY, OF NE\V YORK, N. Y.

RIVET-FORMING DIE.

SEGIFIQATJON forming part of Letters Patent No. 340,888, dated April 27, 1886.

Application tiled September 2?. 1885. Sfrial No. l78.14'2. (No model.)

To LZZ whom t may concern.-

Be it known that I, CLINTON LovELr., of Boston, in the county of Suifolk and State of Massachusetts, have invented certain new and 5 useful Improvements in Rivet-Forming Dies,

of which the following is a specification.

This invention has for its object t-o provide improved dies for severing a length of wire into two parts, each having blunt ends, and

to constituting a rivet when a suitable head is formed on its outer end.

The dies which constitute the subject of my invention are to be used in a machine similar to that described in the patent for improve` ments in wire-nail machines granted to Nathan C. Lewis, October 15, 1.885, No. 328,236, and assigned to me.

The invention consists inthe improved dies, which I will now proceed to describe and 2o claim.

Of the accompanying drawings, forming a part of this specification, Figure l represents a longitudinal section of my improved dies. Fig. -2 represents a section on line x x of Fig. 1.

'25 Fig. 3 is a horizontal section through a portion ofthe machine, showing the headers and the parts immediately associated therewith for operating the same,as well,also,as the relationship of the headers to the blocks and dies 3o and the parts immediately connected with the latter for supporting and operating the same.

The same letters of reference indicate the same parts in all the figures.

In the drawings, c c rep resent blocks adapted to be moved toward and. from each other by any suitable means, or, as is preferred, one of said blocks may be fixed and the other movi to this specification, in the presence of two able, and two sets or pairs of dies operated in the same niachine,as represented in Fig. 3, and

4o in the manner and by the means provided for operating the blocks a and f, shown in the above-mentioned patent to Lewis.

To the blocks a a are a'l'iixed dies b b, each formed with a groove in the face,which abuts against the face of the other die, the two grooves coinciding and forming a circular oritice fitting closely the wire d, from which the rivets are to be made. Each die is provided with a transverse shoulder or offset, f, the offset of each die fitting that of the other, as 5o shown in Fig. 1, the two offsets ff constituting shearing -blades, which sever the wire transversely, leaving its ends at the point where the severing takes place blunt or square, as shown in Fig. 1. The two ends thus formed are of the proper form for the inner ends of two rivets. The outer ends of the rivets are headed by two headers, m m, which simultaneously approach the outer ends of the blocks a c, while they are pressed togetherto hold the 6o rivets,said headers being arranged and operating substantially in the manner shown in Fig. 3 of the drawings, where the header-sare represented as plungers adapted to slide in sockets in the frame, and to strike the outer ends of the rivets and upset them against the ends of the blocks a a, thus forming the heads of said rivets. The headers are operated by pivoted levers j j', which levers are oseillated, as shown and described in the said patent to 7o Lewis.

I ciaim l. The rivetforming dies having the wirereceiving grooves c c and the shearing-blades or offsets f f, arranged and operating substantially as described.

2. The combination, with the rivet-f`orming dies, of headers or hammers arranged to form heads on the outer ends of two rivets held by said dies, as set forth.

In testimony whereof I have signed my name subscribing witnesses, this 26th day of August, 1885.

CLINTON LOVELL.

Titnessesz TI-Ios. XVII. CLARKE, H. BROWN. 

